JSFiddle - React, Tailwind, and code Playground

HTML

<div class="menu-wrapper">
    <ul class='menu'>
        <li><a href="#">კანონმდებლობა</a></li>
        <li><a href="#">გაიცანით ფინანსთა სამინისტრო</a></li>
        <li><a href="#">მედია ცენტრი</a></li>
        <li><a href="#">საჯარო ინფორმაცია</a></li>
    </ul>
</div>

CSS

* {
    margin:0;
    padding:0;
}
.menu-wrapper {
    background: url('https://dl.dropboxusercontent.com/u/2130702/Guli/Web/menu-wrapper-bg.png');
    display: block;
    width: 100%;
    min-width: 990px;
    height: 59px;
}


/** MENU **/
.menu {
    list-style:none;
    white-space: nowrap;
}

.menu li {
    float:left;
    display: block;
    width: 247px;
    height: 59px;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    text-align: center;
    white-space: pre-wrap;
    position: relative;
}

.menu li a {
    color: #666666;
    text-decoration: none;
    font-weight: bold;
    font-size: 13px;
    display:block;
    width: 100%;
    height:100%;
    box-sizing:border-box;
    -moz-box-sizing:border-box;
    padding-left:15px;
    padding-right: 15px;
    display:-ms-flexbox;
    -ms-flex-pack:center;
    -ms-flex-align:center;
    display:-moz-box;
    -moz-box-pack:center;
    -moz-box-align:center;
    display:-webkit-box;
    -webkit-box-pack:center;
    -webkit-box-align:center;
    display:box;
    box-pack:center;
    box-align:center;
    border-right: 1px dotted #7E7E7E;
    position:relative;
}


.menu li:last-child a {
    border:none;
}

.menu li a:hover {
    background: #FFFFFF;
    border-color:transparent;
}

.menu-shaddow {
    display: block;
    opacity:0;
    position: absolute;
    width:28px;
    height: 59px;
    background: url('https://dl.dropboxusercontent.com/u/2130702/Guli/Web/menu-shaddow.png');
    top:0;
    right:-29px;
}

@-moz-document url-prefix() {
    .menu li {
        height: 56px;
    }
}

JavaScript

$('.menu li:not(:last-child) a').hover(
    function() {
        $(document.createElement("span"))
        .addClass("menu-shaddow")
        .appendTo($(this).parent())
        .animate({
            opacity: 1
        }, 300)
    },
    function() {
        $('.menu-shaddow').remove();
    }
);